# NTSB investigations: Franklin 6V4 series, 1973

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB LAX74DUJ24](https://openairdocs.org/ntsb/LAX74DUJ24.md): Hiller Acft UH-12B · Tucson, AZ · Accident · No injuries · Closed · Sep 28, 1973 · N7299 · Substantial damage
- [NTSB MIA74FKA04](https://openairdocs.org/ntsb/MIA74FKA04.md): Hiller Acft UH-12A · St Thomas, VI · Accident · No injuries · Closed · Sep 12, 1973 · N8151H · Substantial damage
- [NTSB OAK74DVM02](https://openairdocs.org/ntsb/OAK74DVM02.md): Hiller Acft UH-12C · Gonzalez, CA · Accident · No injuries · Closed · Jul 13, 1973 · N5320V · Substantial damage
- [NTSB FTW74DPD01](https://openairdocs.org/ntsb/FTW74DPD01.md): Hiller UH-12A · Dublin, TX · Accident · No injuries · Closed · Jul 13, 1973 · N6448D · Substantial damage
- [NTSB SEA74AYE04](https://openairdocs.org/ntsb/SEA74AYE04.md): Bell 47D · Anacortes, WA · Accident · No injuries · Closed · Jul 7, 1973 · N964B · Substantial damage
- [NTSB SEA73FYG36](https://openairdocs.org/ntsb/SEA73FYG36.md): Bell Tomcat · Harrington, WA · Accident · Serious injuries · Closed · May 26, 1973 · N73865 · Substantial damage
- [NTSB FTW73FPD37](https://openairdocs.org/ntsb/FTW73FPD37.md): Bell 47D1 · Decatur, TX · Accident · No injuries · Closed · May 21, 1973 · N74121 · Substantial damage
- [NTSB FTW73DPD34](https://openairdocs.org/ntsb/FTW73DPD34.md): Hiller Acft UH-12C · Justin, TX · Accident · No injuries · Closed · May 14, 1973 · N5328V · Destroyed
- [NTSB FTW73DRG66](https://openairdocs.org/ntsb/FTW73DRG66.md): Bell 47G · San Antonio, TX · Accident · No injuries · Closed · Apr 4, 1973 · N2772 · Substantial damage
- [NTSB OAK73DVG41](https://openairdocs.org/ntsb/OAK73DVG41.md): Bell 47D1 · Marysville, CA · Accident · No injuries · Closed · Jan 27, 1973 · N10190 · Destroyed

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE year(c."eventDate") = 1973
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27033'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27033&year=1973

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.